diff --git a/DESCRIPTION b/DESCRIPTION
index f35780e..7c39817 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -21,7 +21,7 @@ Description: Determine individual pharmacokinetic (and
 License: AGPL-3
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 Depends:
     R (>= 3.5.0)
 Imports:
diff --git a/R/zzz.R b/R/zzz.R
index 4871cab..3387c9d 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -3,5 +3,4 @@
   rxode2::.s3register("rxode2::rxUiGet", "posologyr_ppk_model")
   rxode2::.s3register("rxode2::rxUiGet", "posologyr_error_model")
   rxode2::.s3register("rxode2::rxUiGet", "posologyr_sigma")
-  rxode2::.s3register("rxode2::rxUiGet", "posologyr")
 }
diff --git a/tests/testthat/test_rxui.R b/tests/testthat/test_rxui.R
index 5aae5e6..1cac4ff 100644
--- a/tests/testthat/test_rxui.R
+++ b/tests/testthat/test_rxui.R
@@ -220,6 +220,8 @@ test_that("mod_vancomycin_Goti2018", {
 
 test_that("warfarin example", {
 
+  skip_on_cran()
+
   mod_warfarin_nlmixr <- function() {
     ini({
       THETA_ktr=0.106